Nature · 1965 · 31 citations · 3 references
AgricultureEarth SciencesSoil SciencesAtmospheric ScienceNutrient CyclingSoil FertilityBiological Nitrogen FixationNitrogen AssimilationNitrogen BalanceNitrogen CycleNitrogen CyclingNitrogen FixationNitrogen Balance AssessmentNitrogen FluxesNitrogen Mass Balance
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